Quantitative Aptitude - Arithmetic Ability Questions

An angle is smaller than its supplementary angle by 50°. What is the measure of the angle?

What is 0.53 + 0.53equal to ?

When a number is increased by 21, it becomes 114% of itself. What is the number?

If x2+y2+z2-8x+6y-4z+29 = 0, then find the value of z(x+y).

If a2+b2c2 = b2+c2a2 = c2+a2b2 = 1k k≠0 then k =

If a + b = 5 and ab = 6, then what is the value of a3 + b3?

The income of X is 60% more than Y’s income and the income of Y is 40% more than Z’s income. X’s income is how much percentage more than Z’s income?

If  C+1C = 3, then what is the value of C3+1C3 = ?